WSO2 ESB 4.8.1错误publicId和systemId之间需要空格 [英] WSO2 ESB 4.8.1 ERROR White spaces are required between publicId and systemId

问题描述

我们正在使用带有JAVA 1.7.0_55的WSO2 ESB 4.8.1.总是，当我们启动ESB并发出第一个请求时，会收到此错误:

We are working with WSO2 ESB 4.8.1 with JAVA 1.7.0_55. Always, when we start the ESB and make the first request we receive this error:

TID: [0] [ESB] [2015-04-22 10:51:31,067] ERROR {org.apache.synapse.transport.passthru.util.RelayUtils} -  Error while building Passthrough stream {org.apache.synapse.transport.passthru.util.RelayUtils}
org.apache.axiom.om.OMException: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,62]
Message: White spaces are required between publicId and systemId.
                at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296)
                at org.apache.axiom.om.impl.llom.OMDocumentImpl.getOMDocumentElement(OMDocumentImpl.java:109)
                at org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:570)
                at org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:566)
                at org.apache.synapse.transport.passthru.util.DeferredMessageBuilder.getDocument(DeferredMessageBuilder.java:129)
                at org.apache.synapse.transport.passthru.util.RelayUtils.builldMessage(RelayUtils.java:107)
                at org.apache.synapse.transport.passthru.util.RelayUtils.buildMessage(RelayUtils.java:82)
                at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:68)
                at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:47)
                at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:131)
                at org.apache.synapse.rest.Resource.process(Resource.java:297)
                at org.apache.synapse.rest.API.process(API.java:298)
                at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:76)
                at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:50)
                at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:220)
                at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:488)
                at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:170)
                at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
                at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:225)
                at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
                at java.lang.Thread.run(Thread.java:745)
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,62]
Message: White spaces are required between publicId and systemId.
                at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.next(XMLStreamReaderImpl.java:598)
                at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
                at org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34)
                at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
                at org.apache.axiom.util.stax.dialect.SJSXPStreamReaderWrapper.next(SJSXPStreamReaderWrapper.java:138)
                at org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681)
                at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214)
                ... 22 more
TID: [0] [ESB] [2015-04-22 10:51:31,073] ERROR {org.apache.synapse.mediators.base.SequenceMediator} -  Error while building message {org.apache.synapse.mediators.base.SequenceMediator}
org.apache.axis2.AxisFault: Error while building Passthrough stream
                at org.apache.synapse.transport.passthru.util.RelayUtils.handleException(RelayUtils.java:236)
                at org.apache.synapse.transport.passthru.util.RelayUtils.builldMessage(RelayUtils.java:111)
                at org.apache.synapse.transport.passthru.util.RelayUtils.buildMessage(RelayUtils.java:82)
                at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:68)
                at org.apache.synapse.mediators.AbstractListMediator.mediate(AbstractListMediator.java:47)
                at org.apache.synapse.mediators.base.SequenceMediator.mediate(SequenceMediator.java:131)
                at org.apache.synapse.rest.Resource.process(Resource.java:297)
                at org.apache.synapse.rest.API.process(API.java:298)
                at org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:76)
                at org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:50)
                at org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:220)
                at org.apache.synapse.core.axis2.SynapseCallbackReceiver.handleMessage(SynapseCallbackReceiver.java:488)
                at org.apache.synapse.core.axis2.SynapseCallbackReceiver.receive(SynapseCallbackReceiver.java:170)
                at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
                at org.apache.synapse.transport.passthru.ClientWorker.run(ClientWorker.java:225)
                at org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
                at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.axiom.om.OMException: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,62]
Message: White spaces are required between publicId and systemId.
                at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296)
                at org.apache.axiom.om.impl.llom.OMDocumentImpl.getOMDocumentElement(OMDocumentImpl.java:109)
                at org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:570)
                at org.apache.axiom.om.impl.builder.StAXOMBuilder.getDocumentElement(StAXOMBuilder.java:566)
                at org.apache.synapse.transport.passthru.util.DeferredMessageBuilder.getDocument(DeferredMessageBuilder.java:129)
                at org.apache.synapse.transport.passthru.util.RelayUtils.builldMessage(RelayUtils.java:107)
                ... 17 more
Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[1,62]
Message: White spaces are required between publicId and systemId.
                at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.next(XMLStreamReaderImpl.java:598)
                at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
                at org.apache.axiom.util.stax.dialect.DisallowDoctypeDeclStreamReaderWrapper.next(DisallowDoctypeDeclStreamReaderWrapper.java:34)
                at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225)
                at org.apache.axiom.util.stax.dialect.SJSXPStreamReaderWrapper.next(SJSXPStreamReaderWrapper.java:138)
                at org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:681)
                at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214)
                ... 22 more

此后，我们发出相同的请求，并且一切正常...

After this, we make same request and all works fine...

有什么建议可以避免此错误?

Any suggestion in order to avoid this error?

推荐答案

分析此错误的响应，我们看到以下消息的响应:

Analyzing response with this error we saw responses with this message:

"Error Code: 502 Proxy Error. The ISA Server denied the specified Uniform Resource Locator (URL).

在调试源代码ESB之后，我们在'synapse-nhttp-transport'类中看到了一个错误，该错误中，尽管'nonProxyHosts'中包含文件/repository/conf/axis2/axis2.xml值，但第一个调用是始终通过代理发送.

After debug source code ESB we saw in the 'synapse-nhttp-transport' class there was a bug where, although the file /repository/conf/axis2/axis2.xml values contained in the 'nonProxyHosts', first call is always sent through the proxy.

代理本身就是减少流量的代理，产生的错误是由代理的响应所驱动的.

The proxy itself was the one who cut the traffic and error produced was motivated by the response from it.

要修复，已创建了一个更改类的补丁程序，如下所示:

To fix has created a patch changing the class leaving it as follows:

public HttpHost selectProxy(final HttpHost target) {
  if (this.proxy != null) {
    if (knownProxyHosts.contains(target.getHostName().toLowerCase(Locale.US))) {
      return this.proxy;
    } else if (knownProxyHosts.contains(target,getHostName().toLowerCase(Locale.US))) {
      return null;
    } else {
      // we are encountering this host for the first time
      if (!isByPass(target.getHostName().toLowerCase(Locale.US))) {
        return this.proxy;
      } else {
        return null;
      }   
    }
  }
  return this.proxy;
}

此外，已通知WSO2纠正此错误.

Additionally, WSO2 has been notified to correct this bug.

这篇关于WSO2 ESB 4.8.1错误publicId和systemId之间需要空格的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！